Marcus Westin
Computer Science Research at Stealth
City of Beacon, New York, United States
Summary
🤩
Rockstar🎓
Top SchoolMarcus Westin is a veteran technical founder and product-focused engineer with 16 years of experience building startups, developer tools, and high-scale consumer services. He has repeatedly taken products from 0 to launch as Founder/CTO at companies including ASAPP (early core product/infra), Aldyn, and Flutterby Labs, and as a founding engineer at exits like Clover and Meebo. Marcus codes across the stack—Go, TypeScript, Python, mobile iOS/OSX—and has authored widely used open-source libraries (store.js, WebViewJavascriptBridge) embedded in millions of browsers and apps. Currently researching a new paradigm programming language while earlier leading teams that raised venture capital and returned capital when a product-market fit didn’t align, reflecting both ambition and disciplined judgment. Based in Beacon, NY, he combines rigorous CS training from the University of Chicago with a curiosity for design and psychology that informs product decisions and developer ergonomics.
16 years of coding experience
12 years of employment as a software developer
BS Computer Science, BS Computer Science at University of ChicagoRoss School
English, Swedish
Stackoverflow
29,040reputation
1.6mreached
9answers
3questions
Github Skills (30)
localstorage10
objective-c10
uiwebview10
javascript10
ios10
testing10
backward-compatibility10
browser-support10
llm10
ai10
nodejs10
cross-browser10
api-design9
expressjs9
json9
Programming languages (13)
Github contributions (5)
marcuswestin/store.js
Jun 2010 - Jul 2017
Cross-browser storage for all use cases, used across the web.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:338 commits, 42 PRs, 149 pushes in 7 years 2 months
Contributions summary:Marcus primarily worked on enhancing the `store.js` library, a cross-browser storage solution. Their contributions involved refactoring code, fixing bugs, and adding new functionalities, such as adding test cases and test logic, and migrating towards modern practices like getItem/setItem over bracket notation. These changes improved the library's reliability and addressed compatibility issues across different browsers, including Internet Explorer 7 and legacy Chrome versions. Furthermore, the user added features like a transaction, and JSON serialization.
cross-browsercasesuse-casesbrowserjavascript
marcuswestin/WebViewProxy
Sep 2012 - Dec 2015
A standalone iOS & OSX class for intercepting and proxying HTTP requests (e.g. from a Web View)
Role in this project:Mobile Developer (iOS)
Mobile Developer (iOS)Contributions:92 commits, 3 PRs, 6 pushes in 3 years 3 months
Contributions summary:Marcus primarily developed and refined an iOS web proxy class, as demonstrated by the initial setup and API sketching. They implemented core functionalities, including request handling, response management, and user agent detection for UIWebView requests. The user added example handlers, integrated images, and refactored the code to improve functionality and memory management.
objective-chttp-requestswkwebviewosxtvos
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